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# EVEREX SYSTEMS, INC.
AGI 4000A EV-1895
Processor 80486DX
Processor Speed 25/33MHz
Chip Set C & T
Max. Onboard DRAM 16MB
SRAM Cache 64/256KB
BIOS AMI
Dimensions 350mm x 320mm
I/O Options 32-bit external memory card
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| Front panel | J4 | 32-bit memory | S1 |
| connector | | card | |
|----------------------+----------+---------------+----------|
| Speaker | J5 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | W1 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | W7 | Unknown |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CPU speed select High | W6 | Open |
|---+----------------------------------+--------+------------|
| | CPU speed select normal | W6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CPU speed select switchable via | W6 | pins 2 & 3 |
| | the keyboard | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | W7 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | W7 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Speaker select enabled | W20 | Closed |
|---+----------------------------------+--------+------------|
| | Speaker select disabled | W20 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | W8 | W9 |
|------+--------+--------+--------+--------+--------+--------|
| 1MB | (4) | NONE | NONE | NONE | pins 2 | pins 2 |
| | 256K x | | | | & 3 | & 3 |
| | 9 | | | | | |
|------+--------+--------+--------+--------+--------+--------|
| 2MB | (4) | (4) | NONE | NONE | pins 2 | pins 2 |
| | 256K x | 256K x | | | & 3 | & 3 |
| | 9 | 9 | | | | |
|------+--------+--------+--------+--------+--------+--------|
| 4MB | (4) 1M | NONE | NONE | NONE | pins 1 | pins 1 |
| | x 9 | | | | & 2 | & 2 |
|------+--------+--------+--------+--------+--------+--------|
| 8MB | (4) 1M | (4) 1M | NONE | NONE | pins 1 | pins 1 |
| | x 9 | x 9 | | | & 2 | & 2 |
|------+--------+--------+--------+--------+--------+--------|
| 10MB | (4) 1M | (4) 1M | (4) | (4) | pins 1 | pins 1 |
| | x 9 | x 9 | 256K x | 256K x | & 2 | & 2 |
| | | | 9 | 9 | | |
|------+--------+--------+--------+--------+--------+--------|
| 12MB | (4) 1M | (4) 1M | (4) 1M | NONE | pins 1 | pins 1 |
| | x 9 | x 9 | x 9 | | & 2 | & 2 |
|------+--------+--------+--------+--------+--------+--------|
| 16MB | (4) 1M | (4) 1M | (4) 1M | (4) 1M | pins 1 | pins 1 |
| | x 9 | x 9 | x 9 | x 9 | & 2 | & 2 |
|------------------------------------------------------------|
| Note:10, 12 and 16MB configurations require the |
| installation of the EV-1896 memory card. |
| |
| Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/switch 1 | SW1/switch | SW1/switch | SW1/switch |
| | | 2 | 3 | 4 |
|------+--------------+------------+------------+------------|
| 1MB | On | Off | On | On |
|------+--------------+------------+------------+------------|
| 2MB | Off | Off | On | Off |
|------+--------------+------------+------------+------------|
| 4MB | On | On | On | On |
|------+--------------+------------+------------+------------|
| 8MB | Off | Off | On | Off |
|------+--------------+------------+------------+------------|
| 10MB | Off | On | On | On |
|------+--------------+------------+------------+------------|
| 12MB | Off | On | Off | On |
|------+--------------+------------+------------+------------|
| 16MB | Off | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | TAG |
|------------------+--------------------+--------------------|
| 64KB | (10) 16K x 4 | (1) 16K x 1 |
|------------------+--------------------+--------------------|
| 256KB | (10) 64K x 4 | (1) 64K x 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | W2 | W3 |
|------------------+--------------------+--------------------|
| 64KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+